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Interference Information

This device complies with Part 15 of the FCC Rules. Operation is subject 

to the following two conditions: (1) This device may not cause harmful 

interference; and (2) This device must accept any interference received, 

including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits 

for a Class B digital device, pursuant to Part 15 of the FCC Rules. These 

limits are designed to provide reasonable protection against harmful 

interference in a residential installation.
Privacy of Communications may not be ensured when using this product.
This equipment generates, uses, and can radiate radio frequency energy 

and, if not installed and used in accordance with the instructions, may 

cause harmful interference to radio communications. However, there is no 

guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television 

reception, which can be determined by turning the equipment off and on, 

the user is encouraged to try to correct the interference by one or more of 

the following measures:

• Reorient or relocate the receiving antenna (that is, the antenna for 

radio or television that is “receiving” the interference).

• Reorient or relocate and increase the separation between the 

telecommunications equipment and receiving antenna.

• Connect the telecommunications equipment into an outlet on a circuit 

different from that to which the receiving antenna is connected.

If these measures do not eliminate the interference, please consult 

your dealer or an experienced radio/television technician for additional 

suggestions. Also, the Federal Communications Commission has prepared 

a helpful booklet, “How To Identify and Resolve Radio/TV Interference 

Problems.” This booklet is available from the U.S. Government Printing 

Office, Washington, D.C. 20402. Please specify stock number 004-000-

00345-4 when ordering copies.
Notice: The changes or modifications not expressly approved by the party 

responsible for compliance could void the user’s authority to operate the 

equipment.

Hearing Aid Compatibility (HAC)

This telephone system meets FCC standards for Hearing Aid Compatibility.

Licensing

Licensed under US Patent 6,427,009.

Introduction

Your telephone is designed to give you flexibility in use and high quality 

performance. To get the most from your new telephone, we suggest that 

you take a few minutes right now to read through this instruction manual.

CAUTION: When using telephone equipment, there 

are basic safety instructions that should always 

be followed. Refer to the IMPORTANT SAFETY 

INSTRUCTIONS provided with this product and save 

them for future reference.

NOTE: This phone uses Touch-Tone dialing service only. 

For this telephone to function properly, you must use 

Touch-Tone service available through your local telephone 

company.

Before You Begin

Telephone Jack Requirements

To use this phone, you need an RJ11C type modular 

telephone jack, which might look like the one 

pictured here, installed in your home. If you don’t 

have a modular jack, call your local phone company 

to find out how to get one installed.

Important Installation 

Information

•  Never install telephone wiring during a lightning storm.
•  Never install telephone jacks in wet locations unless the jack is 

specifically designed for wet locations.

•  Never touch non-insulated telephone wires or terminals, unless the 

telephone line has been disconnected at the network interface.

•  Use caution when installing or modifying telephone lines.
•  Temporarily disconnect any equipment connected to the phone such 

as faxes, other phones, or modems.

Handset Layout

Model 29253  

Series Trimline 

Phone User’s Guide

Equipment Approval Information

Your telephone equipment is approved for connection to the Public 

Switched Telephone Network and is in compliance with parts 15 and 68, 

FCC Rules and Regulations and the Technical Requirements for Telephone 

Terminal Equipment published by ACTA.

1  Notification to the Local Telephone Company

On the bottom of this equipment is a label indicating, among other information, 

the US number and Ringer Equivalence Number (REN) for the equipment. You 

must, upon request, provide this information to your telephone company.

The REN is useful in determining the number of devices you may 

connect to your telephone line and still have all of these devices ring 

when your telephone number is called. In most (but not all) areas, the 

sum of the RENs of all devices connected to one line should not exceed 

5. To be certain of the number of devices you may connect to your line 

as determined by the REN, you should contact your local telephone 

company.
A plug and jack used to connect this equipment to the premises wiring 

and telephone network must comply with the applicable FCC Part 68 

rules and requirements adopted by the ACTA. A compliant telephone 

cord and modular plug is provided with this product. It is designed to 

be connected to a compatible modular jack that is also compliant. See 

installation instructions for details.

Notes  

• This equipment may not be used on coin service provided by the 

telephone company.

• Party lines are subject to state tariffs, and therefore, you may not be 

able to use your own telephone equipment if you are on a party line. 

Check with your local telephone company.

• Notice must be given to the telephone company upon permanent 

disconnection of your telephone from your line.

• If your home has specially wired alarm equipment connected to the 

telephone line, ensure the installation of this product does not disable 

your alarm equipment. If you have questions about what will disable 

alarm equipment, consult your telephone company or a qualified 

installer.

US Number is located on the cabinet bottom.

REN Number is located on the cabinet bottom.

2  Rights of the Telephone Company 

Should your equipment cause trouble on your line which may harm the 

telephone network, the telephone company shall, where practicable, 

notify you that temporary discontinuance of service may be required. 

Where prior notice is not practicable and the circumstances warrant 

such action, the telephone company may temporarily discontinue 

service immediately. In case of such temporary discontinuance, the 

telephone company must: (1) promptly notify you of such temporary 

discontinuance; (2) afford you the opportunity to correct the situation; 

and (3) inform you of your right to bring a complaint to the Commission 

pursuant to procedures set forth in Subpart E of Part 68, FCC Rules and 

Regulations.
The telephone company may make changes in its communications 

facilities, equipment, operations or procedures where such action is 

required in the operation of its business and not inconsistent with FCC 

Rules and Regulations. If these changes are expected to affect the use 

or performance of your telephone equipment, the telephone company 

must give you adequate notice, in writing, to allow you to maintain 

uninterrupted service.

Installing the Phone

Your telephone should be placed on a level surface such as a desk or table 

top, or you can mount it on a wall. A desktop/wall mounting pedestal is 

built into the base of the phone.
1.  Slide the RINGER volume switch (on the handset) to the desired volume.
2.  Set the receiver volume switch (on the handset) to the desired 

listening volume.

3.  Plug the telephone line cord into a 

modular wall phone jack

.

4.  Feed the cord through the grooves as shown in the picture below.

Wall Mount Installation

Your telephone may also be mounted on a wall plate (not included).
1.  Plug the telephone line cord into a 

modular wall phone jack

.

2.   Slip the mounting holes on the base over the wall plate posts and firmly slide 

the unit down into place (wall plate not included).

NOTE: In desktop or wall mount mode, you may want to 

wrap the excess telephone line cord around the mounting 

bracket on the bottom of the base. 

Telephone Operation

Redial

This unit redials up to 32 digits. To automatically redial the last number 

you called:
1.  Pick up the handset and wait for a dial tone.
2.  Press the redial button.

Flash

Press the flash button instead of the hook switch to activate custom 

calling services such as call waiting or call transfer. Custom calling 

services are provided by the phone company.

Receiver Volume

You may control the listening level with the volume switch on the bottom 

of the handset. It has 3 levels: lo, mid, and high.

Ringer Volume

You may control the ringer volume level with the switch located above the 

touch tone pad on the handset.
   = ringer tone will be loud
     = ringer tone will be low
   = telephone will not ring

Troubleshooting Tips

No dial tone.

•  Press and release the hook switch. Check the hook switch: Does it fully 

extend when the handset is lifted from the cradle?

Phone doesn’t ring.

•  Make sure RINGER switch (located on the handset) is set to loud or low.
•  Are you using too many phones on one line? (The total REN of all 

phones on the same line should not be greater than the maximum 

REN for your calling area. See Equipment  Approval Information). 

Other party cannot hear you.

•  Make sure phone cord is securely plugged in. 
•  Make sure extension phones are on the hook at the same time you’re 

using the phone. It is normal for the volume to drop when additional 

extension phones are used at the same time.

Phone “howls” when handset is placed near the base and handset volume 

level is too high.

•  This is normal feedback due to handset volume level being set 

to maximum.

General Product Care

To keep your telephone working and looking good, follow these guidelines:

•  Avoid putting the phone near heating appliances and devices that 

generate electrical noise (for example, motors or fluorescent lamps).

•  Do not expose to direct sunlight or moisture.
•  Avoid dropping and other rough treatment to the phone.
•  Clean with a soft cloth. 
•  Never use a strong cleaning agent or abrasive powder because this 

will damage the finish.

•  Retain the original packaging in case you need to ship the phone at a 

later date.

Service

If trouble is experienced with this equipment, for repair or warranty 

information, please contact customer service at 1-800-448-0329. If the 

equipment is causing harm to the telephone network, the telephone 

company may request that you disconnect the equipment until the 

problem is resolved.
This product may be serviced only by the manufacturer or its authorized 

service agents. Changes or modifications not expressly approved by 

Thomson Inc. could void the user’s authority to operate this product. For 

instructions on how to obtain service, refer to the warranty included in this 

guide or call customer service at 1-800-448-0329.
Or refer inquiries to:

Thomson Inc.
Manager, Consumer Relations
PO Box 1976
Indianapolis, IN 46206

Attach your sales receipt to the booklet for future reference or jot down 

the date this product was purchased or received as a gift. This information 

will be valuable if service should be required during the warranty period.
Purchase date  ____________________________________________
Name of store  _______________________________________________

Modular 

telephone 

line jack

Wall plate

Model 29253

15929620 (Rev. 5 Dom E/S)

06-41

Printed in China

Thomson Inc.

10330 North Meridian St.

Indianapolis, IN 46290-1024

© 2006 Thomson Inc. 

Trademark(s) ® Registered

Marca(s) Registrada(s)

SEE MARKING ON BOTTOM / BACK OF PRODUCT

RISK OF ELECTRIC SHOCK

            DO NOT OPEN

WARNING: TO

PREVENT FIRE OR

ELECTRICAL SHOCK

HAZARD, DO NOT

EXPOSE THIS

PRODUCT  TO RAIN

OR MOISTURE.

THE LIGHTNING

FLASH AND ARROW

HEAD WITHIN THE

TRIANGLE IS A

WARNING SIGN

ALERTING YOU OF

“DANGEROUS

VOLTAGE” INSIDE

THE PRODUCT.

CAUTION: TO REDUCE THE

RISK OF ELECTRIC SHOCK, DO

NOT REMOVE COVER (OR

BACK). NO USER

SERVICEABLE PARTS INSIDE.

REFER SERVICING TO

QUALIFIED SERVICE

PERSONNEL.

THE EXCLAMATION

POINT WITHIN THE

TRIANGLE IS A

WARNING SIGN

ALERTING YOU  OF

IMPORTANT

INSTRUCTIONS

ACCOMPANYING

THE PRODUCT.

CAUTION:

Limited Warranty

What your warranty covers:

• Defects in materials or workmanship.

For how long after your purchase:

• One year, from date of purchase.
  (The warranty period for rental units begins with the first rental or 45 

days from date of shipment to the rental firm, whichever comes first.)

What we will do:

• Provide you with a new or, at our option, a refurbished unit. The 

exchange unit is under warranty for the remainder of the original 

product’s warranty period.

How you get service:

• Properly pack your unit. Include any cables, etc., which were originally 

provided with the product. We recommend using the original carton 

and packing materials.

• ”Proof of purchase in the form of a bill of sale or receipted invoice 

which is evidence that the product is within the warranty period, must 

be presented to obtain warranty service.”  For rental firms, proof of 

first rental is also required.  Also print your name and address and a 

description of the defect. Send via standard UPS or its equivalent to:

   

Thomson Inc.

   

11721 B Alameda Ave.

   

Socorro, Texas 79927

• Pay any charges billed to you by the Exchange Center for service not 

covered by the warranty.

• Insure your shipment for loss or damage. Thomson Inc. accepts no 

liability in case of damage or loss.

• A new or refurbished unit will be shipped to you freight prepaid.

What your warranty does not cover:

• Customer instruction. (Your Owner’s Manual provides information 

regarding operating instructions and user controls. Any additional 

information, should be obtained from your dealer.)

• Installation and setup service adjustments.
• Batteries.
• Damage from misuse or neglect.
• Products which have been modified or incorporated into 

other products.

• Products purchased or serviced outside the USA.
• Acts of nature, such as but not limited to lightning damage.

Product Registration:

• Please complete and mail the Product Registration Card packed 

with your unit. It will make it easier to contact you should it ever be 

necessary. The return of the card is not required for warranty coverage.

Limitation of Warranty:

• The warranty stated above is the only warranty applicable to this 

product. All other warranties, express or implied (including all implied 

warranties of merchantability or fitness for a particular purpose) are 

hereby disclaimed. No verbal or written information given by Thomson 

Inc., its agents, or employees shall create a guaranty or in any way 

increase the scope of this warranty.

• Repair or replacement as provided under this warranty is the exclusive 

remedy of the consumer.  Thomson Inc. shall not be liable for incidental 

or consequential damages resulting from the use of this product 

or arising out of any breach of any express or implied warranty on 

this product. This disclaimer of warranties and limited warranty are 

governed by the laws of the state of Indiana. Except to the extent 

prohibited by applicable law, any implied warranty of merchantability 

or fitness for a particular purpose on this product is limited to the 

applicable warranty period set forth above.

How state law relates to this warranty:

• Some states do not allow the exclusion nor limitation of incidental 

or consequential damages, or limitations on how long an implied 

warranty lasts so the above limitations or exclusions may not apply 

to you.

• This warranty gives you specific legal rights, and you also may have 

other rights that vary from state to state.

If you purchased your product outside the USA:

• This warranty does not apply. Contact your dealer for 

warranty information.

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redial

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Ringer 

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Receiver 

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flash

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